An osprey nest overlooks the Chesapeake Bay north of Dennis Point Lane in Shady Side, Md. (Michael Robinson Chavez/The Washington Post)

The April 21 Metro article “EPA reaches deal to police Pennsylvania’s pollution of the Chesapeake Bay” reported on a settlement of a suit by D.C., Maryland, Virginia, Delaware and environmental groups against Pennsylvania for its long-standing failure to do its agreed part to protect the Chesapeake Bay from pollution. Pennsylvania has been a major source of pollution to the Chesapeake Bay from farm waste and urban and suburban runoff via the Susquehanna River. The settlement requires the Environmental Protection Agency to enforce the requirements on pollution prevention agreed to by Pennsylvania. D.C., Maryland, Virginia and Delaware have long worked hard to address pollution into the bay as Pennsylvania has dragged its feet. Bravo for this important accomplishment.

I recently saw a television advertisement for a fertilizer encouraging people to “feed” their lawns with a polluting product. Lawn fertilizer is full of nitrogen that might be good for grass but also is a major contributor to algae blooms in the Chesapeake Bay that cause dead zones and are harmful to many of its species.

It’s time for D.C., Maryland, Virginia, Delaware and now Pennsylvania to sue fertilizer makers with the aim, as a minimum, to force them to stop advertising their polluting poison in those states. It seems to fit in with the states’ agreement to stop pollution into the bay. It’s worth the effort to protect the bay for future generations.

Jared Wermiel, Silver Spring